203404104404243 has 8 divisors (see below), whose sum is σ = 208136572705776. Its totient is φ = 198671733388800.

The previous prime is 203404104404239. The next prime is 203404104404251. The reversal of 203404104404243 is 342404401404302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203404104404243 - 2² = 203404104404239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203404100404243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20082818 + ... + 28462743.

It is an arithmetic number, because the mean of its divisors is an integer number (26017071588222).

Almost surely, 2^{203404104404243} is an apocalyptic number.

203404104404243 is a deficient number, since it is larger than the sum of its proper divisors (4732468301533).

203404104404243 is an equidigital number, since it uses as much as digits as its factorization.

203404104404243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48643045.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 203404104404243 its reverse (342404401404302), we get a palindrome (545808505808545).

The spelling of 203404104404243 in words is "two hundred three trillion, four hundred four billion, one hundred four million, four hundred four thousand, two hundred forty-three".